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Volume 40 Issue 2
Feb 2026
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Chinese Journal of High Pressure Physics  > 2026  >  40(2): 020101.
LI Kewei, AKRAM Muhammad Sabeeh, YANG Lei, YUAN Wenshuo, LIU Fusheng. Physical Mechanisms of “Shock Cooling” at the Molecular Fluid/Window Interface under Shock Loading[J]. Chinese Journal of High Pressure Physics, 2026, 40(2): 020101. doi: 10.11858/gywlxb.20251092
Citation: LI Kewei, AKRAM Muhammad Sabeeh, YANG Lei, YUAN Wenshuo, LIU Fusheng. Physical Mechanisms of “Shock Cooling” at the Molecular Fluid/Window Interface under Shock Loading[J]. Chinese Journal of High Pressure Physics, 2026, 40(2): 020101. doi: 10.11858/gywlxb.20251092
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Physical Mechanisms of “Shock Cooling” at the Molecular Fluid/Window Interface under Shock Loading

doi: 10.11858/gywlxb.20251092

  • Institute of High Temperature and High Pressure Physics, School of Physical Science and Technology, Southwest Jiaotong University, Chengdu 610031, Sichuan, China

  • Received Date: 18 May 2025
  • Rev Recd Date: 07 Jul 2025
    • Available Online: 15 Jul 2025
  • Issue Publish Date: 05 Feb 2026
    Abstract
  • The physical mechanism of “shock cooling” at the molecular fluid/window interface has troubled the shock wave physics community for many years and remains unsolved. There are three distinct viewpoints for explaining the cooling effect at the shock interface: thermal equilibrium between the molecular fluid and the window, extinction effect of the molten optical window, and specific shock response of the molecular fluid. This paper comparatively investigates the shock radiation and temperature variation characteristics of the interfaces between the chemically active fluid CHBr3/the inert liquid argon (LAr) and the LiF optical window. Under the same shock pressure, the interface radiation exhibits distinct evolution features for the two liquids, indicating that the interface cooling effect is closely related to the fluid medium and its chemical activity. Therefore, the experimental results of this paper strongly support that the interface cooling effect is caused by the shock response of the fluid itself, rather than heat conduction or window melting extinction.

     

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